5122138609 has 12 divisors (see below), whose sum is σ = 5976426288. Its totient is φ = 4377126600.

The previous prime is 5122138597. The next prime is 5122138621. The reversal of 5122138609 is 9068312215.

It is an interprime number because it is at equal distance from previous prime (5122138597) and next prime (5122138621).

It is not a de Polignac number, because 5122138609 - 2⁷ = 5122138481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5122138639) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141687 + ... + 174124.

It is an arithmetic number, because the mean of its divisors is an integer number (498035524).

Almost surely, 2^5122138609 is an apocalyptic number.

It is an amenable number.

5122138609 is a deficient number, since it is larger than the sum of its proper divisors (854287679).

5122138609 is a wasteful number, since it uses less digits than its factorization.

5122138609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316156 (or 316149 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 5122138609 is about 71569.1177044960. The cubic root of 5122138609 is about 1723.7876922367.

The spelling of 5122138609 in words is "five billion, one hundred twenty-two million, one hundred thirty-eight thousand, six hundred nine".